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host adapter
See adapter.
HP-PB
Hewlett-Packard Precision Bus. The data, control, and addressing signal lines for
input/output operation on Hewlett-Packard PA-RISC computer systems.
HP-PB is
the 32-bit system-architected bus through which the CPU, memory, and input/output
adapter cards communicate.
HP-PB card
See adapter.
Interface card
See adapter.
UO
Input/Output. The computer subsystem through which data communications with
external devices is performed.
IODC
I/O Dependent Code. In PA-RISC computers, IODC is ROM-based firmware on an
adapter card that is used for supplying card-dependent information to the host
computer. Thii code may contain test routines that check operation of the card.
LED
Light Emitting Diode, a semiconductor component that emits light when electrically
activated to serve as an indicator of operation or state.
loopback
Generally, the process of transmitting known data, and comparing received data with
expected results (normally used during troubleshooting, test, or verification
procedures).
Glossary 3